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| TECHNICAL DATA Quad Single Supply Comparator The IL2901 consists of four independent precision voltage comparators with an offset voltage specification as low as 2.0 mV max for four comparators which were designed specifically to operate from a single power supply over a wide range of voltages. Application areas include limit comparators, simple analog to digital converters; pulse, square wave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. * Single or Split Supply Operation * Low Input Bias Current * Low Input Offset Current * Input Common Mode Voltage Range to Gnd * Low Output Saturation Voltage * TTL and CMOS Compatible IL2901 ORDERING INFORMATION IL2901N Plastic IL2901D SOIC TA = -40 to 85 C for all packages. LOGIC DIAGRAM PIN ASSIGNMENT PIN 3 = VCC PIN 12 = GND Rev. 01 IL2901 MAXIMUM RATINGS* Symbol VCC Parameter Power Supply Voltages Single Supply Split Supplies VIDR VICR ISC IIN TJ Tstg TL PD Input Differential Voltage Range Input Common Mode Voltage Range (1) Output Short Circuit to Ground Input Current, per pin (2) Junction Temperature Plastic Packages Storage Temperature Lead Temperature, 1mm from Case for 10 Seconds Power Dissipation @TA=25C Plastic Package Derate above 25C 150 -65 to +150 260 1.0 8.0 C C C W mW/C 36 18 36 -0.3 to VCC Continuous 50 mA V V V Value Unit Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. Notes: 1. Split Power Supplies. 2. VIN<-0.3V. This input current will only exist when voltage at any of the input leads is driven negative. * RECOMMENDED OPERATING CONDITIONS Symbol VCC TA DC Supply Voltage Operating Temperature, All Package Types Parameter Min 2.5 or 5.0 -40 Max 15 or 30 +85 Unit V C This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or VOUT)VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. Rev. 01 IL2901 DC ELECTRICAL CHARACTERISTICS (TA=-40 to +85C) Guaranteed Limit Symbol VIO Parameter Input Offset Voltage Test Conditions V0=1.4V VCC=5.0-30V;RS100 VICR=0V - (VCC-1.5)V V0=1.4V VCC=5.0-30V VICR=0V - (VCC-1.5)V V0=1.4V VCC=5.0-30V VICR=0V - (VCC-1.5)V VCC=5.0-30V RL=,VCC=5.0 RL=,VCC=30V AVOL t1 Voltage Gain Large Signal Response Time Response Time Output Sink Current Saturation Voltage Output Leakage Current VCC=15V, RL=15K VIN=TTL Logic Swing, Vref=1.4V, VCC=5.0V, RL=5.1K, VRL=5.0V VCC=5.0V, RL=5.1K, VRL=5.0V VI(-)=1.0V, VI(+)=0V, V01.5V, VCC=5.0V VI(-)=1.0V, VI(+)=0V, Isink4.0mA, VCC=5.0V VI(+)=1.0V, VI(-)=0V, V0=5.0V V0=30V All VINGND or V-Supply (if used) Min Typ Max 9.0 5.0* 400 nA Unit mV IIB Input Bias Current IIO Input Offset Current - 150 nA VICR ICC Input Common Mode Voltage Range Supply Current 0 200* 300* VCC2.0V 2.0* 2.5* - V mA V/mV ns t2 Isink Vsat IOL 6.0* - 1.3* - 700 s mA mV nA 0.1* 1000 VCC* V VIDR *=@25C Differential Input Voltage Range Rev. 01 IL2901 TYPICAL PERFORMANCE CHARACTERISTICS Rev. 01 IL2901 APPLICATION NOTE The IL2901 is high gain, wide bandwidth devices which, like most comparators, can easily oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the comparator changes states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling. Reducing these input resistors to < 10 k reduces the feedback signal levels and finally, adding even a small amount (1 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required. All pins of any unused comparators should be tied to the negative supply. The bias network of the IL2901 establishes a drain current which is independent of the magnitude of the power supply voltage over the range of from 2 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than -0.3 VDC (at 25C). An input clamp diode can be used as shown in the applications section. TYPICAL APPLICATIONS (V+ = 5.0VDC) Rev. 01 IL2901 TYPICAL APPLICATIONS (V+ = 5.0VDC) TYPICAL APPLICATIONS (V+ = 15.0VDC) Rev. 01 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) Rev. 01 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) Rev. 01 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) Rev. 01 IL2901 TYPICAL APPLICATIONS (V+ = 15.0VDC) Rev. 01 IL2901 SPLIT SUPPLY APPLICATIONS (V+ = 15.0VDC and V- = -15.0VDC) Rev. 01 IL2901 Rev. 01 |
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